EXTRACTION METHOD OF SEPARATING NEODYMIUM AND PRASEODYMIUM FROM SULPHURIC ACID SOLUTIONS Russian patent published in 2025 - IPC C22B59/00 C22B3/26 C22B7/00 

Abstract RU 2833065 C1

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy of rare metals and can be used in the technology of extracting neodymium and praseodymium from solutions with low content and obtaining them in individual form. Method of separating neodymium and praseodymium involves contacting an extractant solution, which is solution of 0.08-0.12 M N,N,N',N'-tetrabutyl diglycolamide in a mixture of n-dodecane and decanol-1 at a volume ratio of 90:10 with an aqueous solution containing 0.1-5 g/l of neodymium and praseodymium sulphates, in terms of the sum of concentrations in terms of metal, in 1.8-2.2 M sulphuric acid.

EFFECT: enabling increase in the metal separation coefficients, reducing the number of separation stages of the extraction cascade.

1 cl, 6 ex

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RU 2 833 065 C1

Authors

Sharov Vladislav Eduardovich

Kostikova Galina Valerevna

Zhilov Valerij Ivanovich

Dates

2025-01-14Published

2024-06-24Filed